Element = Lattice = Model = Element: Cu
Lattice: hcp
Model: MEAM_LAMMPS_AsadiZaeemNouranian_2015_Cu__MO_390178379548_000
Computed model cutoff of 3.999999990463257 Angstroms
Computed isolated atomic energy of 0.0 eV for species Cu

==============================================================================
==============================================================================
 Starting optimization to find optimum lattice constant 'a' with c/a fixed to
 sqrt(8/3)
==============================================================================
==============================================================================


Attempting to perform relaxation using initial lattice constant guess of a = 1.0 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 39
         Function evaluations: 82
Results for this minimization:
  a = 2.5611044108867684, total energy = -14.14623766259837

Attempting to perform relaxation using initial lattice constant guess of a = 1.125 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 39
         Function evaluations: 85
Results for this minimization:
  a = 2.561104424670339, total energy = -14.146237662598367

Attempting to perform relaxation using initial lattice constant guess of a = 1.25 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 38
         Function evaluations: 80
Results for this minimization:
  a = 2.5611044093966484, total energy = -14.146237662598367

Attempting to perform relaxation using initial lattice constant guess of a = 1.375 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.561104404181247, total energy = -14.146237662598367

Attempting to perform relaxation using initial lattice constant guess of a = 1.5 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 38
         Function evaluations: 79
Results for this minimization:
  a = 2.561104407906535, total energy = -14.146237662598365

Attempting to perform relaxation using initial lattice constant guess of a = 1.625 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 36
         Function evaluations: 76
Results for this minimization:
  a = 2.5611044108867667, total energy = -14.146237662598368

Attempting to perform relaxation using initial lattice constant guess of a = 1.75 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.561104410840199, total energy = -14.146237662598365

Attempting to perform relaxation using initial lattice constant guess of a = 1.875 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.5611044238321483, total energy = -14.146237662598368

Attempting to perform relaxation using initial lattice constant guess of a = 2.0 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 34
         Function evaluations: 72
Results for this minimization:
  a = 2.561104410886767, total energy = -14.146237662598367

Attempting to perform relaxation using initial lattice constant guess of a = 2.125 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 34
         Function evaluations: 75
Results for this minimization:
  a = 2.561104422807694, total energy = -14.146237662598367

Attempting to perform relaxation using initial lattice constant guess of a = 2.25 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 34
         Function evaluations: 73
Results for this minimization:
  a = 2.561104414612055, total energy = -14.146237662598365

Attempting to perform relaxation using initial lattice constant guess of a = 2.375 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 34
         Function evaluations: 74
Results for this minimization:
  a = 2.5611044206423683, total energy = -14.146237662598368

Attempting to perform relaxation using initial lattice constant guess of a = 2.5 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 32
         Function evaluations: 66
Results for this minimization:
  a = 2.561104418768082, total energy = -14.146237662598372

Attempting to perform relaxation using initial lattice constant guess of a = 2.625 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 33
         Function evaluations: 72
Results for this minimization:
  a = 2.561104408151004, total energy = -14.146237662598365

Attempting to perform relaxation using initial lattice constant guess of a = 2.75 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 33
         Function evaluations: 69
Results for this minimization:
  a = 2.561104417499154, total energy = -14.146237662598368

Attempting to perform relaxation using initial lattice constant guess of a = 2.875 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 34
         Function evaluations: 73
Results for this minimization:
  a = 2.5611044228076922, total energy = -14.146237662598365

Attempting to perform relaxation using initial lattice constant guess of a = 3.0 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 36
         Function evaluations: 75
Results for this minimization:
  a = 2.5611044134944665, total energy = -14.14623766259837

Attempting to perform relaxation using initial lattice constant guess of a = 3.125 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.561104418709874, total energy = -14.146237662598367

Attempting to perform relaxation using initial lattice constant guess of a = 3.25 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 35
         Function evaluations: 73
Results for this minimization:
  a = 2.561104410886765, total energy = -14.146237662598367

Attempting to perform relaxation using initial lattice constant guess of a = 3.375 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 35
         Function evaluations: 74
Results for this minimization:
  a = 2.5611044221557666, total energy = -14.146237662598365

Attempting to perform relaxation using initial lattice constant guess of a = 3.5 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 36
         Function evaluations: 78
Results for this minimization:
  a = 2.5611044287681572, total energy = -14.146237662598365

Attempting to perform relaxation using initial lattice constant guess of a = 3.625 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.5611044113757058, total energy = -14.146237662598367

Attempting to perform relaxation using initial lattice constant guess of a = 3.75 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 37
         Function evaluations: 79
Results for this minimization:
  a = 2.5611044140532613, total energy = -14.146237662598368

Attempting to perform relaxation using initial lattice constant guess of a = 3.875 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 36
         Function evaluations: 77
Results for this minimization:
  a = 2.5611044149845803, total energy = -14.146237662598367

Attempting to perform relaxation using initial lattice constant guess of a = 4.0 Angstroms (c/a fixed at sqrt(8/3))

Optimization terminated successfully.
         Current function value: -14.146238
         Iterations: 38
         Function evaluations: 81
Results for this minimization:
  a = 2.561104411445558, total energy = -14.14623766259837

==============================================================================
==============================================================================
 Starting optimization with both a and c/a relaxed
==============================================================================
==============================================================================


Attempting to perform relaxation using initial lattice constant guess of a = [2.56110442] Angstroms and c = 3.345812802116848 = ([1.30639453] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.146420
         Iterations: 68
         Function evaluations: 146
Results for this minimization:
  a = 2.558265506767574, c = 4.191471895121815, total energy = -14.146419906242988

Attempting to perform relaxation using initial lattice constant guess of a = [2.56110442] Angstroms and c = 3.554926102249151 = ([1.38804419] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.146420
         Iterations: 74
         Function evaluations: 153
Results for this minimization:
  a = 2.558265492806323, c = 4.191471920704123, total energy = -14.14641990624299

Attempting to perform relaxation using initial lattice constant guess of a = [2.56110442] Angstroms and c = 3.764039402381454 = ([1.46969385] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.146420
         Iterations: 73
         Function evaluations: 153
Results for this minimization:
  a = 2.5582654870202517, c = 4.19147189674217, total energy = -14.146419906242992

Attempting to perform relaxation using initial lattice constant guess of a = [2.56110442] Angstroms and c = 3.9731527025137567 = ([1.5513435] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.146420
         Iterations: 68
         Function evaluations: 142
Results for this minimization:
  a = 2.5582654948898362, c = 4.19147187733331, total energy = -14.146419906242993

Attempting to perform relaxation using initial lattice constant guess of a = [2.56110442] Angstroms and c = 4.18226600264606 = ([1.63299316] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.146420
         Iterations: 69
         Function evaluations: 140
Results for this minimization:
  a = 2.5582654932001563, c = 4.191471887499917, total energy = -14.146419906242992

Attempting to perform relaxation using initial lattice constant guess of a = [2.56110442] Angstroms and c = 4.391379302778363 = ([1.71464282] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.146420
         Iterations: 72
         Function evaluations: 147
Results for this minimization:
  a = 2.5582654958260935, c = 4.19147190931777, total energy = -14.14641990624299

Attempting to perform relaxation using initial lattice constant guess of a = [2.56110442] Angstroms and c = 4.600492602910665 = ([1.79629248] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.146420
         Iterations: 70
         Function evaluations: 151
Results for this minimization:
  a = 2.558265498049674, c = 4.191471857813552, total energy = -14.14641990624299

Attempting to perform relaxation using initial lattice constant guess of a = [2.56110442] Angstroms and c = 4.809605903042968 = ([1.87794214] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.146420
         Iterations: 68
         Function evaluations: 147
Results for this minimization:
  a = 2.5582654836478502, c = 4.1914718818654695, total energy = -14.146419906242988

Attempting to perform relaxation using initial lattice constant guess of a = [2.56110442] Angstroms and c = 5.018719203175271 = ([1.95959179] * a) Angstroms

Optimization terminated successfully.
         Current function value: -14.146420
         Iterations: 71
         Function evaluations: 151
Results for this minimization:
  a = 2.5582654845066015, c = 4.191471900597062, total energy = -14.146419906242992

==============================================================================
==============================================================================
 Finished with optimization
==============================================================================
==============================================================================

 Final lattice Constants:
   a = 2.5582654948898362 Angstroms, c = 4.19147187733331 Angstroms, c/a = 1.638404

 Total energy: -14.146419906242993 eV

 Cohesive energy: -3.5366049765607483 eV/atom

==============================================================================
==============================================================================